I am working on an animation and need some Poser tech help
with 2 issues.

Firstly, is it possible to have an object or prop to link or parent to a figures hand
at intervals. For example, a figure is holding an object then throws it.
How do you get  the object to de-parent from the figures hand at a specific frame?

Secondly.
Can you make an object invisible at different points along the time line?